Three point masses $1.0 \mathrm{kg}$, $1.5 \mathrm{kg}$ and $2.5 \mathrm{kg}$are placed at the vertices of a right-angle triangle of sides  $4.0 \mathrm{cm}$, $3.0 \mathrm{cm}$ and $5.0 \mathrm{cm}$, as shown in the figure. The centre of mass of the system is

• A

  $0.\mathrm{6 }\mathrm{cm}$ right and $2.\mathrm{0 }\mathrm{cm}$ above $\mathrm{1 }\mathrm{kg}$ mass
• B

  $2.\mathrm{0 }\mathrm{cm}$ right and $0.\mathrm{9 }\mathrm{cm}$ above $\mathrm{1 }\mathrm{kg}$ mass
• Correct answer
  C

  $0.\mathrm{9 }\mathrm{cm}$ right and $2.\mathrm{0 }\mathrm{cm}$ above $\mathrm{1 }\mathrm{kg }$mass
• D

  $1.\mathrm{5 }\mathrm{cm}$ right and $1.\mathrm{2 }\mathrm{cm}$ above$\mathrm{1 }\mathrm{kg}$ mass

Hence, the correct answer is option: 'C'.